Cargando…
Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors
Reactive oxygen species (ROS)-induced apoptosis is a promising treatment strategy for malignant neoplasms. However, current systems are highly dependent on oxygen status and/or external stimuli to generate ROS, which greatly limit their therapeutic efficacy particularly in hypoxic tumors. Herein, we...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102211/ https://www.ncbi.nlm.nih.gov/pubmed/30127408 http://dx.doi.org/10.1038/s41467-018-05798-x |
_version_ | 1783349110334554112 |
---|---|
author | Wang, Zhenzhen Zhang, Yan Ju, Enguo Liu, Zhen Cao, Fangfang Chen, Zhaowei Ren, Jinsong Qu, Xiaogang |
author_facet | Wang, Zhenzhen Zhang, Yan Ju, Enguo Liu, Zhen Cao, Fangfang Chen, Zhaowei Ren, Jinsong Qu, Xiaogang |
author_sort | Wang, Zhenzhen |
collection | PubMed |
description | Reactive oxygen species (ROS)-induced apoptosis is a promising treatment strategy for malignant neoplasms. However, current systems are highly dependent on oxygen status and/or external stimuli to generate ROS, which greatly limit their therapeutic efficacy particularly in hypoxic tumors. Herein, we develop a biomimetic nanoflower based on self-assembly of nanozymes that can catalyze a cascade of intracellular biochemical reactions to produce ROS in both normoxic and hypoxic conditions without any external stimuli. In our formulation, PtCo nanoparticles are firstly synthesized and used to direct the growth of MnO(2). By adjusting the ratio of reactants, highly-ordered MnO(2)@PtCo nanoflowers with excellent catalytic efficiency are obtained, where PtCo behaves as oxidase mimic and MnO(2) functions as catalase mimic. In this way, the well-defined MnO(2)@PtCo nanoflowers not only can relieve hypoxic condition but also induce cell apoptosis significantly through ROS-mediated mechanism, thereby resulting in remarkable and specific inhibition of tumor growth. |
format | Online Article Text |
id | pubmed-6102211 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61022112018-08-22 Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors Wang, Zhenzhen Zhang, Yan Ju, Enguo Liu, Zhen Cao, Fangfang Chen, Zhaowei Ren, Jinsong Qu, Xiaogang Nat Commun Article Reactive oxygen species (ROS)-induced apoptosis is a promising treatment strategy for malignant neoplasms. However, current systems are highly dependent on oxygen status and/or external stimuli to generate ROS, which greatly limit their therapeutic efficacy particularly in hypoxic tumors. Herein, we develop a biomimetic nanoflower based on self-assembly of nanozymes that can catalyze a cascade of intracellular biochemical reactions to produce ROS in both normoxic and hypoxic conditions without any external stimuli. In our formulation, PtCo nanoparticles are firstly synthesized and used to direct the growth of MnO(2). By adjusting the ratio of reactants, highly-ordered MnO(2)@PtCo nanoflowers with excellent catalytic efficiency are obtained, where PtCo behaves as oxidase mimic and MnO(2) functions as catalase mimic. In this way, the well-defined MnO(2)@PtCo nanoflowers not only can relieve hypoxic condition but also induce cell apoptosis significantly through ROS-mediated mechanism, thereby resulting in remarkable and specific inhibition of tumor growth. Nature Publishing Group UK 2018-08-20 /pmc/articles/PMC6102211/ /pubmed/30127408 http://dx.doi.org/10.1038/s41467-018-05798-x Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Wang, Zhenzhen Zhang, Yan Ju, Enguo Liu, Zhen Cao, Fangfang Chen, Zhaowei Ren, Jinsong Qu, Xiaogang Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title | Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title_full | Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title_fullStr | Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title_full_unstemmed | Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title_short | Biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
title_sort | biomimetic nanoflowers by self-assembly of nanozymes to induce intracellular oxidative damage against hypoxic tumors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102211/ https://www.ncbi.nlm.nih.gov/pubmed/30127408 http://dx.doi.org/10.1038/s41467-018-05798-x |
work_keys_str_mv | AT wangzhenzhen biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT zhangyan biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT juenguo biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT liuzhen biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT caofangfang biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT chenzhaowei biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT renjinsong biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors AT quxiaogang biomimeticnanoflowersbyselfassemblyofnanozymestoinduceintracellularoxidativedamageagainsthypoxictumors |